Polygons, Theorems and
Problems  Table of Content




Polygon definition


The Base of the Statue of Liberty, Star Polygon of 11 Vertices and the Golden Rectangle.
HTML5 Animation for iPad.


Polygon Classification. Interactive Mind Map. 

Geometric Art: Isolines, Regular Polygons, Square, Octagon, Hexadecagon, Parallel Lines, Symmetry, Software 

Triangles.
Theorems and Problems 

Quadrilaterals.
Theorems and Problems 

Pentagons. Theorems and Problems 

Hexagons. Theorems and Problems 

Heptagons.
Theorems and Problems 

Octagons. Theorems and Problems 

Nonagon or Enneagon. Theorems and Problems 

Decagon. Theorems and Problems 

Geometry Problem 1357.
Regular Dodecagon, Diagonals, Concurrency, Collinearity, Points, Lines. 

Geometric Art: Isolines, Polygons, Rhombus, Triangle, Octagon, Parallel Lines, Symmetry, Geometry for Kids,
Sacred Geometry, Software 

iPad Apps: Spangled!.
Regular Decagon Art. 

Optical Prism with
Regular Polygonal Form.
Scene created using Prism HD for iPad. 

iPad Apps: Springle by Bolasol Inc. Geometric Art: Squares and Pentagons 

Problem
225. Viviani's Theorem Extension, Regular Polygon, Apothem, Distance. 

Snowflakes: Hexagonal Symmetry and the Golden Rectangle.
The individual ice crystals often have hexagonal symmetry. 

Thirteenangle stone discovered at Incahuasi, Huancavelica.
Inca Geometry: Tridecagon.


Engineering the Impossible: Chartres Cathedral
Circle, Square, Triangle. 

Looted Peru Moche
Headdress Recovered in London
Octagon: Feline sea god with octopuslike
tentacles 

Euclid's
Elements Book I, 23 Definitions. Onepage visual illustration.
Euclid's
Elements Book. Index 

Geometry Problem 1325.
Octagons, Midpoints, Squares, Mobile Apps, iPad. 

Geometry Problem 1313.
Regular Decagon, Pentadecagon, Equilateral Triangle, Congruence. 

Geometry Problem
725.
Kurschak's Dodecagon, Square, Equilateral Triangle, Polygon, Midpoints, 30, 60 Degrees. 

Proposed
Problem 430.
Circumscribed and Inscribed Regular Pentagon, Perpendicular, Areas. 

Geometric Art: Decagon and Pentagon. 

Geometric Art: Decagon and
Decagram. 